mirror of
https://git.code.sf.net/p/quake/quakeforge
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06064ec390
create a field_offset macro that takes a structure type and a field and returns the offset of the field within the structure everything else: use field_offset to calculate the size of variable sized structs
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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compat.h
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Miscellaneous compability stuff
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifndef __compat_h
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#define __compat_h
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STDARG_H
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# include <stdarg.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <stdlib.h>
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#ifndef max
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# define max(a,b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef min
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# define min(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef bound
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# define bound(a,b,c) (max(a, min(b, c)))
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#endif
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/* This fixes warnings when compiling with -pedantic */
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#if defined(__GNUC__) && !defined(inline)
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# define inline __inline__
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#endif
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/* These may be underscored... */
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#if !defined(HAVE_SNPRINTF) && defined(HAVE__SNPRINTF)
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# define snprintf _snprintf
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#endif
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#if !defined(HAVE_VSNPRINTF) && defined(HAVE__VSNPRINTF)
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# define vsnprintf _vsnprintf
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#endif
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#if defined(_WIN32) && !defined(__BORLANDC__)
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# define kbhit _kbhit
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#endif
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/* If we don't have them in the C-library we declare them to avoid warnings */
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#if ! (defined(HAVE_SNPRINTF) || defined(HAVE__SNPRINTF))
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extern int snprintf(char * s, size_t maxlen, const char *format, ...);
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#endif
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#if ! (defined(HAVE_VSNPRINTF) || defined(HAVE__VSNPRINTF))
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extern int vsnprintf(char *s, size_t maxlen, const char *format, va_list arg);
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#endif
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/* String utility functions */
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#if !defined(strequal)
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# define strequal(a,b) (strcmp (a, b) == 0)
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#endif
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#if !defined(strcaseequal)
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# define strcaseequal(a,b) (strcasecmp (a, b) == 0)
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#endif
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#if !defined(strnequal)
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# define strnequal(a,b,c) (strncmp (a, b, c) == 0)
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#endif
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#if !defined(strncaseequal)
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# define strncaseequal(a,b,c) (strncasecmp (a, b, c) == 0)
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#endif
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#undef field_offset
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#define field_offset(type,field) ((int)&(((type *)0)->field))
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#endif // __compat_h
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